What’s Vulnerable › Vulnerabilities

CVE-2026-4977: UsersWP <= 1.2.58 - Authenticated (Subscriber+) Restricted Usermeta Modification via 'htmlvar' Parameter

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-10 · updated 2026-06-17
• Weakness: CWE-862

Description

The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress is vulnerable to Improper Access Control in all versions up to, and including, 1.2.58 This is due to insufficient field-level permission validation in the upload_file_remove() AJAX handler where the $htmlvar parameter is not validated against a whitelist of allowed fields or checked against the field's for_admin_use property. This makes it possible for authenticated attackers, with subscriber-level access and above, to clear or reset any restricted usermeta column for their own user record, including fields marked as "For admin use only", bypassing intended field-level access restrictions.

Affected products

• stiofansisland UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP: through 1.2.58

References

• https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2251
• https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2274
• https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-meta.php#L165
• https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2251
• https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2274
• https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-meta.php#L165
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fuserswp/tags/1.2.58&new_path=%2Fuserswp/tags/1.2.59
• https://www.wordfence.com/threat-intel/vulnerabilities/id/efee685c-e2cd-471b-aea9-607124df6006?source=cve

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